AT91 ARM Thumb - based Microcontrollers AT91SAM7S256C-AU
programming ic chips
,programmable audio chip
AT91SAM7S256 Summary Preliminary
Description
Atmel’s AT91SAM7S256 is a member of a series of low pincount Flash microcontrollers based on the 32-bit ARM RISC processor. It features a 256 Kbyte high- speed Flash and a 64 Kbyte SRAM, a large set of peripherals, including a USB 2.0 device, and a complete set of system functions minimizing the number of external components. The device is an ideal migration path for 8-bit microcontroller users looking for additional performance and extended memory. The embedded Flash memory can be programmed in-system via the JTAG-ICE interface or via a parallel interface on a production programmer prior to mounting. Built-in lock bits and a security bit protect the firmware from accidental overwrite and preserves its confidentiality. The AT91SAM7S256 system controller includes a reset controller capable of managing the power-on sequence of the microcontroller and the complete system. Correct device operation can be monitored by a built-in brownout detector and a watchdog running off an integrated RC oscillator. The AT91SAM7S256 is a general-purpose microcontroller. Its integrated USB Device port makes it an ideal device for peripheral applications requiring connectivity to a PC or cellular phone. Its aggressive price point and high level of integration pushes its scope of use far into the cost-sensitive, high-volume consumer market.
Power Supplies
The AT91SAM7S256 has six types of power supply pins and integrates a voltage regulator, allowing the device to be supplied with only one voltage. The six power supply pin types are: • VDDIN pin. It powers the voltage regulator and the ADC; voltage ranges from 3.0V to 3.6V, 3.3V nominal. If the voltage regulator is not used, VDDIN should be connected to GND. • VDDOUT pin. It is the output of the 1.8V voltage regulator. • VDDIO pin. It powers the I/O lines and the USB transceivers; dual voltage range is supported. Ranges from 3.0V to 3.6V, 3.3V nominal. Note that supplying less than 3.0V to VDDIO prevents any use of the USB transceivers. • VDDFLASH pin. It powers a part of the Flash and is required for the Flash to operate correctly; voltage ranges from 3.0V to 3.6V, 3.3V nominal. • VDDCORE pins. They power the logic of the device; voltage ranges from 1.65V to 1.95V, 1.8V typical. It can be connected to the VDDOUT pin with decoupling capacitor. VDDCORE is required for the device, including its embedded Flash, to operate correctly. • VDDPLL pin. It powers the oscillator and the PLL. It can be connected directly to the VDDOUT pin. No separate ground pins are provided for the different power supplies. Only GND pins are provided and should be connected as shortly as possible to the system ground plane.
|
Ordering Code
|
Package | Package Type | ROM Code Revision | Temperature Operating Range |
| AT91SAM7S256-AU-001 | LQFP 64 | Green | 001 | Industrial (-40° C to 85° C) |
TQFP-100 16Bit Flash Microcontrollers Graphics Controller PIC24FJ256DA210-IPT
Original New IC Chips Electronic Components ATMEGA128A-AUR TQFP-64 16MHz Speed
14 20Pin SOIC-14 NanoWatt XLP Flash Microcontrollers PIC16F1825-I/SL
PIC12F675-I/P 8 Pin Flash Based 5.5V 8 Bit CMOS Microcontrollers
AT89C2051-24PU Electronic IC Chip NEW AND ORIGINAL STOCK
ATMEGA8-16AU Electronic IC Chip NEW AND ORIGINAL STOCK
ATMEGA8515-16JU Electronic IC Chip NEW AND ORIGINAL STOCK
ATMEGA8535-16PU Electronic IC Chip NEW AND ORIGINAL STOCK
ATMEGA2560-16AU Electronic IC Chip NEW AND ORIGINAL STOCK
ATMEGA2561-16AU Electronic IC Chip NEW AND ORIGINAL STOCK
| Image | Part # | Description | |
|---|---|---|---|
|
|
TQFP-100 16Bit Flash Microcontrollers Graphics Controller PIC24FJ256DA210-IPT |
PIC PIC® 24F Microcontroller IC 16-Bit 32MHz 256KB (85.5K x 24) FLASH 100-TQFP (12x12)
|
|
|
|
Original New IC Chips Electronic Components ATMEGA128A-AUR TQFP-64 16MHz Speed |
AVR AVR® ATmega Microcontroller IC 8-Bit 16MHz 128KB (64K x 16) FLASH 64-TQFP (14x14)
|
|
|
|
14 20Pin SOIC-14 NanoWatt XLP Flash Microcontrollers PIC16F1825-I/SL |
PIC PIC® XLP™ mTouch™ 16F Microcontroller IC 8-Bit 32MHz 14KB (8K x 14) FLASH 14-SOIC
|
|
|
|
PIC12F675-I/P 8 Pin Flash Based 5.5V 8 Bit CMOS Microcontrollers |
PIC PIC® 12F Microcontroller IC 8-Bit 20MHz 1.75KB (1K x 14) FLASH 8-PDIP
|
|
|
|
AT89C2051-24PU Electronic IC Chip NEW AND ORIGINAL STOCK |
8051 89C Microcontroller IC 8-Bit 24MHz 2KB (2K x 8) FLASH 20-PDIP
|
|
|
|
ATMEGA8-16AU Electronic IC Chip NEW AND ORIGINAL STOCK |
AVR AVR® ATmega Microcontroller IC 8-Bit 16MHz 8KB (4K x 16) FLASH 32-TQFP (7x7)
|
|
|
|
ATMEGA8515-16JU Electronic IC Chip NEW AND ORIGINAL STOCK |
AVR AVR® ATmega Microcontroller IC 8-Bit 16MHz 8KB (4K x 16) FLASH 44-PLCC (16.6x16.6)
|
|
|
|
ATMEGA8535-16PU Electronic IC Chip NEW AND ORIGINAL STOCK |
AVR AVR® ATmega Microcontroller IC 8-Bit 16MHz 8KB (4K x 16) FLASH 40-PDIP
|
|
|
|
ATMEGA2560-16AU Electronic IC Chip NEW AND ORIGINAL STOCK |
AVR AVR® ATmega Microcontroller IC 8-Bit 16MHz 256KB (128K x 16) FLASH 100-TQFP (14x14)
|
|
|
|
ATMEGA2561-16AU Electronic IC Chip NEW AND ORIGINAL STOCK |
AVR AVR® ATmega Microcontroller IC 8-Bit 16MHz 256KB (128K x 16) FLASH 64-TQFP (14x14)
|